diff --git a/src/GraphicsSystem/Viewer.ts b/src/GraphicsSystem/Viewer.ts
index b103b2fb2..a8f0f8fe6 100644
--- a/src/GraphicsSystem/Viewer.ts
+++ b/src/GraphicsSystem/Viewer.ts
@@ -43,6 +43,8 @@ export class Viewer
     //相机类
     m_Camera: Camera;
 
+    m_bUsePass = true;
+
     m_RenderType: RenderType = RenderType.Wireframe;
     //场景 引用自数据库
 
@@ -210,12 +212,11 @@ export class Viewer
         // this.m_Render.gammaOutput = true;
         // this.m_Render.shadowMap.enabled = true;
         // this.m_Render.toneMapping = THREE.ReinhardToneMapping;
-        this.m_Render.setPixelRatio(window.devicePixelRatio);
-        this.m_Render.physicallyCorrectLights = true;
-        this.m_Render.toneMappingExposure = Math.pow(1, 5.0); // to allow for very bright scenes.
-
         //设置设备像素比。 这通常用于HiDPI设备，以防止模糊输出画布。
         this.m_Render.setPixelRatio(window.devicePixelRatio);
+        //this.m_Render.physicallyCorrectLights = true;
+        //this.m_Render.toneMappingExposure = Math.pow(1, 5.0); // to allow for very bright scenes.
+
         //设置它的背景色为黑色
         this.m_Render.setClearColor(0x000000, 1);
 
@@ -245,8 +246,15 @@ export class Viewer
         {
             this.m_Render.clear();
             this.m_bNeedUpdate = false;
-            // this.m_Render.render(this.m_Scene, this.m_Camera.m_CurCamera);
-            this.m_Composer.render();
+
+            if (this.m_bUsePass)
+            {
+                this.m_Composer.render();
+            }
+            else
+            {
+                this.m_Render.render(this.m_Scene, this.m_Camera.m_CurCamera);
+            }
 
             // this.m_Render.render(this.m_GripScence, this.m_Camera.m_CurCamera);
         }